REMOVING A RETROSELLAR PITUITARY ADENOMA VIA THE ENDOSCOPIC ENDONASAL TRANSSPHENOIDAL TRANSCAVERNOUS APPROACH
https://doi.org/10.17650/1683-3295-2019-21-2-39-44
Abstract
The study objective is to describe the removal of the pituitary adenoma from the posterior cranial fossa through endoscopic transsphenoidal trans-cavernous approach, when the main surgical corridor was the tumor-intact cavernous sinus.
Materials and methods. A 55-year-old male patient with endosupraretrosellar endocrine-inactive pituitary adenoma was admitted to N.N. Burdenko Research Center of Neurosurgery. The patient had earlier undergone two surgeries for pituitary adenoma. Using the endoscopic endonasal transsphenoidal approach, we found that these surgeries resulted in the formation of scar-altered adipose tissue in the sphenoid sinus and partly in the sella turcica; anatomical landmarks indicating the midline and the location of the internal carotid arteries were absent. We formed an access to both retro- and suprasellar portions of the tumor between the sella turcica and cavernous segment of the internal carotid artery (through the cavernous sinus); then we dissected anterior and posterior walls of the sinus and revealed a soft capsule-free pituitary adenoma, which was completely removed by a vacuum aspirator. The skull base defect was repaired using the multilayer technique with autologous tissues.
Results. After surgery, neurological status and visual functions did not change. In the postoperative period, we observed no oculomotor disorders, pituitary insufficiency, diabetes insipidus, or nasal liquorrhea. Follow-up computed tomography scans revealed no signs of intracranial complications or obvious residual tumor tissue. Magnetic resonance imaging 4 month postoperatively demonstrated small laterosellar fragments of the tumor in the sella turcica. The patient was further followed up.
Conclusion. Cavernous sinus is a natural anatomical corridor providing access to the structures of the posterior cranial fossa and interpeduncular cistern. The main risk (damage to the cavernous segment of the internal carotid artery) can be minimized by using intraoperative dopplerography and visual control of all manipulations.
About the Authors
О. I. Sharipov
N.N. Burdenko National Medical Research Center of Neurosurgery, Ministry of Health of Russia
Russian Federation
16 4th Tverskaya-Yamskaya St., Moscow 125047
Russian Federation
16 4th Tverskaya-Yamskaya St., Moscow 125047
M. A. Kutin
N.N. Burdenko National Medical Research Center of Neurosurgery, Ministry of Health of Russia
Russian Federation
16 4th Tverskaya-Yamskaya St., Moscow 125047
Russian Federation
16 4th Tverskaya-Yamskaya St., Moscow 125047
P. L. Kalinin
N.N. Burdenko National Medical Research Center of Neurosurgery, Ministry of Health of Russia
Russian Federation
16 4th Tverskaya-Yamskaya St., Moscow 125047
Russian Federation
16 4th Tverskaya-Yamskaya St., Moscow 125047
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For citations:
Sharipov О.I., Kutin M.A., Kalinin P.L. REMOVING A RETROSELLAR PITUITARY ADENOMA VIA THE ENDOSCOPIC ENDONASAL TRANSSPHENOIDAL TRANSCAVERNOUS APPROACH. Russian journal of neurosurgery. 2019;21(2):39-44. (In Russ.) https://doi.org/10.17650/1683-3295-2019-21-2-39-44
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